Commits on Nov 21, 2017

1. Remove manual interpolation of local space in transform shaders. …

   Instead, for vertex transform shaders we now write out:
    (world.xy, z * world.w, world.w)
   
   This gives us constant Z across the polygon for draw ordering.
   
   It also means we can use the hardware interpolators instead of
   manually dividing by Z in the fragment shader for local_pos.
   
   This is mostly preparation work for switching shaders over to
   be brush primitives, but has the happy side effect of:
   
    * Fixing a small number of Gecko + Servo reftests.
    * Simpler and faster code.

   

   gw3583 committed Nov 21, 2017
   8253bbb

2. Address review comments

   

   gw3583 committed Nov 21, 2017

   Loading status checks…
   0aebe2b